Browser test dry runs with mojo audio streams.

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index af85a4e8b055b9c5d3529cbe8b4e2a1808adf52a..f9f7e63e771a2ea6cc498031a672e6d41ba62c63 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -905,6 +905,10 @@ class CONTENT_EXPORT RenderFrameHostImpl
   void DeleteWebBluetoothService(
       WebBluetoothServiceImpl* web_bluetooth_service);
 
+  void CreateAudioOutputStreamFactory(
+      const service_manager::BindSourceInfo& source_info,
+      mojom::RendererAudioOutputStreamFactoryRequest request);
+
   void BindMediaInterfaceFactoryRequest(
       const service_manager::BindSourceInfo& source_info,
       media::mojom::InterfaceFactoryRequest request);
@@ -1190,6 +1194,8 @@ class CONTENT_EXPORT RenderFrameHostImpl
   // |FrameHostMsg_TextSurroundingSelectionResponse| message comes.
   TextSurroundingSelectionCallback text_surrounding_selection_callback_;
 
+  UniqueAudioOutputStreamFactoryPtr audio_output_stream_factory_;
+
   // Hosts media::mojom::InterfaceFactory for the RenderFrame and forwards
   // media::mojom::InterfaceFactory calls to the remote "media" service.
   std::unique_ptr<MediaInterfaceProxy> media_interface_proxy_;